Yossi Cohen, head of Mossad, is in Washington today to brief key figures in the Biden administration, armed with a “mountain” of the latest Israeli intelligence about Iran’s nuclear program and ballistic missiles.

The official reason for his visit is to say goodbye to the outgoing Trump administration and prepare for Israel’s work with the Biden Administration.

The head of the Mossad is expected to serve as Prime Minister Benjamin Netanyahu’s main liaison with the new administration, because of his personal acquaintance with Biden and many of the new president’s senior officials developed while he was head of Israel’s National Security Council.

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Cohen knows Biden personally and has met with him several times. He worked closely with then-Secretary of State John Kerry (now the presumptive climate change envoy) and then-National Security Adviser Susan Rice (presumptive domestic policy advisor). Perhaps most importantly, he knows Wendy Sherman, who led the talks with the Iranians and is the presumptive deputy Secretary of State. Sherman lobbied Jewish groups to accept the original Iranian agreement reached under Obama and knows the players on all sides. Cohen also knows William Burns, in line to become CIA director, who will clearly play a key role in supplying unbiased intelligence about the implications of any deal with Iran.

He is also well acquainted with his American counterpart Jake Sullivan, considered one of the architects of the nuclear deal under Obama. Sullivan is slated to serve as Biden’s National Security Adviser. Another acquaintance is Anthony Blinken, expected to serve as Secretary of State.

Read more at Breaking Defense.